Specialists in diesel engine repairs

Marine and industrial diesel repair specialists trusted by the pros for over 30 years.

Two locations in Portland, Maine and Hyannis, Massachusetts on Cape Cod.

Certified & trained dealers for these brands

Sportfishing

Pleasure /
yachting

Commercial
marine

Industrial off-highway equipment

Fuel injection
systems

Generator
services

Emergency/ first response vessels

Testimonals

What our clients say about Casco Bay Diesel

How was your expereince with Casco Bay Diesel? Click the Google icon below to leave a comment.

United States Coast Guard

"Mr. Chamberlain’s work ethic and experience throughout the retrofit, coupled with his willingness to teach, instilled a higher level of expertise on our ship GRAND ISLE I would have not believed possible. On behalf of my entire crew, I wish to thank Mr. Chamberlain for a job well done."

Matt Stedman Matt Stedman

"Bob, Gaylen, and the boys at CBD have been nothing short of incredible , dependable, and trustworthy part of my boating program. I’m very happy to have CBD in my network when that time comes."

Kevin Simons Kevin Simons

"From the very start they were quick to respond, professional and provided all the info I needed to make educated decisions about the rebuild. Galen and his team are very experienced professionals. I will be calling Casco Bay Diesel for all of my needs for my boat and generator!"

Partners

We are certified and trained dealers for these brands

cascobaydiesel

CB Diesel & Injection Service Diesel engine repair and injection pump shop locations in Portland ME and Cape Cod MA (207) 878-9377 Cell (207) 650-0176... more 470 Riverside St, Unit 7, Portland, Maine 04103

Big repower going on at our Portland location. Tw